What are those rumours? The first one was that Intel is having problems ramping the 45/High-K/Metal process to volume so there is going to be a second 45nm non-High-K/non-Metal process to run the lower end volume chips.

The problem with this one is that changing the process like that would basically need a complete relayout of the chip. Unless this was planned from day one, the effort involved would be huge, expensive, and very unlikely to happen.